metric conversions
Convert 4.5 km to m
4500 m
How many moles are in 3.011 x 1023 atoms of iron?
0.50 moles Fe
Find the moles in 22.0 g of NaOH (molar mass 40.00 g/mol)
0.550 moles
Convert 2.5 mL of water to grams (density 1g/cm3)
2.5 grams
What is my major?
biochemistry
Convert 250 mg to g
0.250 grams
How many atoms are in 2.00 moles of copper?
1.204 x 10^24 atoms Cu
Find the mass of 0.750 mol MgCl2
71.4 grams
How many liters are in 56.3 grams of water?
0.0563 L
What is the course number of your Chemistry Class?
1120
Convert 3.2 L to uL
3,200,000 uL
How many molecules are in 0.125 mol of CO2?
7.53 x 10^22 molecules
Find the moles in 5.00 g of glucose, C6H12O6
0.0278 moles
A solution has a density of 1.20 g/mL. What is the mass of 50.0 mL of it?
60.0 g
Where am I from ?
Colorado
Convert 0.00045 kg to mg
450 mg
How many moles of oxygen atoms are in 4.50 mol of CO2?
9.00 mol O atoms
How many atoms of chlorine are in 10.0 g of CaCl2?
1.09 x 1023 atoms Cl
A solution has a density of 1.05 g/mL. What is the volume, in cups, of 315 g of this solution? (4.167 cups = 1 liter)
1.25 cups
What is the difference between molarity and molality?
molality is units of moles/kg solution
molarity is units of moles/liter solution
Convert 7.8 x 10-3 m to micrometers
7800 um
A sample contains 9.033 x 1024 molecules of N2. How many moles of N atoms are present?
30 moles N
How many grams of oxygen are in 25.0 g of Al2(SO4)3?
14.0 grams Oxygen
A 45.0 mL sample of solution has a density of 1.15 g/mL and is 20.0% NaCl by mass. How many molecules of NaCl are present?
mass solution = 51.75 g -> mass NaCl = 10.35 g -> 0.177 mol -> 1.07 x 1023 molecules NaCl
You have a rectangular piece of Copper with a length of 2.73 in, a width of 2.03 cm, and a height of 36 mm. The rectangle weighs .45405 kg. What is the density of copper?
8.96 g/cm3